Buddy, as a trader, you need to know which brokerage companies in the industry have flawless reputations. It is good that you have noticed ActivTrades' reputation since it is one of those few I mentioned earlier.
The thing that influences reputation is their track record. ActivTrades has more than 20 years of experience in the industry, but it is not only about its longevity but also about being a reliable and trustworthy broker throughout the years. If you search online, I don't believe that you will find any open or unresolved issues with traders. They seem to have an excellent track record.

It is izzzy, bro. ActivTrades has been in this bizz for more than 20 years already. This fact in itself means a lot.
Then, the broker is regualted by multiple financial watchdogs. It means security for funds and data.
On top of that the broker offers huge spectrum of assets with attractivce trading conditions: low spreads and swaps + high leverage.
That is why it is respected!